The 34-year-old, who walked across the Niagara Falls last year, said winds were higher than expected as he crossed a Canyon tributary gorge some 1,500 feet (457 meters) above the Little Colorado River in eastern Arizona.
He took just under 23 minutes to cross the 426 meters -- faster than anticipated -- giving a thumbs up and half-running the last several yards to reach the other side.
"My arms are aching like you couldn't believe," he said, as he hugged his wife and children after the nerve-wracking walk, broadcast live around the world.
He began final training in Florida weeks ago, boosting stamina by walking repeatedly along a 1,000-foot long rope and using wind machines to simulate gusts of up to 80 kilometers an hour.